Looks like you are pulling control power off the top two lines gong into the starter. If so you may not have enough voltage to the circuit. If it feeds a transformer, see if you can retap it for lower voltage.
Re: 3 phase Air Compressor wiring - Magnetic starter. in reply to Chris(WA), 04-18-2013 05:23:11
I'm going to stick my neck out on this.
Because it is only temporary, only so a buyer can see it run, and NOT put it into service, I would just hook it up to a disconnect and start/stop it by hand. Most likely the pressure switch will not work, so just turn in on to show that it runs and pumps air, then shut it off.
Re: 3 phase Air Compressor wiring - Magnetic starter. in reply to Dusty MI, 04-18-2013 05:34:53
Go ahead my sparky friend, stick your neck out there lol dont be afraid!!!!!!!! I tend to agree if all he wants to do is see it run a short period hook it up direct no need for temporary thermal overload protection, provided he has a quick manual disconnect method handy
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